CN107694623A - Co-detections of tumor markers in benign chip apparatus using PDMS as the dual drive of substrate - Google Patents
Co-detections of tumor markers in benign chip apparatus using PDMS as the dual drive of substrate Download PDFInfo
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- CN107694623A CN107694623A CN201610676642.2A CN201610676642A CN107694623A CN 107694623 A CN107694623 A CN 107694623A CN 201610676642 A CN201610676642 A CN 201610676642A CN 107694623 A CN107694623 A CN 107694623A
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Abstract
The present invention relates to a kind of co-detections of tumor markers in benign chip apparatus using PDMS as the dual drive of substrate, belong to analysis testing field.Dimethyl silicone polymer be PDMS its be used for making the substrate of the multichannel combined detection micro-fluidic chip of classifiable tumor mark, it is advantageous, also have problem;This case is directed to the problem.This case main points are, the selected PDMS with ecosystem surface of substrate, and fastening is positioned at the sample liquid stream terminal of the micro-fluidic chip its neighbor positions manually by the hinge-type fixture for being attached to miniature ultrasonic transducer units, interfacial tension is reduced with ultrasonic wave, strong absorbability using PDMS to ultrasonic wave simultaneously, reach ultrasonic intensity rapid decrement in short distance, so as to form interfacial tension difference at the both ends of the chip, the difference provides a kind of strength driven sample liquid stream and flowed along hydrophobic capillary channel to the terminal direction, the strength with Micropump its mechanicalness pumping strength included in structure while intercouple, Collaboration.
Description
Technical field
The present invention relates to a kind of co-detections of tumor markers in benign chip apparatus using PDMS as the dual drive of substrate, belong to analysis
Testing field.
Background technology
Tumor markers (tumor marker, TM) refers in the generation and breeding of tumour, by tumour cell sheet
Either tumour cell is reacted and caused, a kind of material of the presence of reflection tumour and growth by body caused by body, bag
Include protein, hormone, enzyme (isodynamic enzyme) and oncoprotein etc..The tumor markers in blood samples of patients or body fluid is chemically examined, can be
Early detection tumour in cancer screening, and the effect of observe oncotherapy and judge patient's prognosis.Clinically commonly use at present
Tumor markers has:(1) alpha-fetoprotein (AFP) is the mark of the tumours such as primary carcinoma of liver, carcinoma of testis, oophoroma;(2) cancer embryo
Antigen (CEA) is the mark of the tumours such as digestive system tumor, lung cancer, breast cancer;(3) CA125 (CA125) is ovary
The mark of the tumours such as cancer;(4) CA153 (CA153) is the mark of the tumours such as breast cancer;(5) CA19-9
(CA19-9) it is the mark of digestive system tumor;(6) CA724 (CA724) is the mark of the tumours such as stomach cancer, oophoroma
Thing;(7) carbohydrate antigen 242 (CA242) is the mark of digestive system tumor;(8) CA50 (CA50) is digestive system
The mark of the tumours such as tumour, breast cancer, lung cancer;(9) CYFRA21-1 (Cy211) is the mark of the tumours such as non-small cell lung cancer;
(10) neuronspecific enolase (NSE) is the mark of the tumours such as ED-SCLC, neuroendocrine tumor;(11) before
Row gland specific antigen (PSA) is the tumor markers of prostate cancer;(12) human chorionic gonadotrophin (HCG) is that embryo is thin
The mark of the tumours such as born of the same parents' cancer, trophoblastic tumor (suede cancer, vesicular mole);(13) thyroglobulin (TG) is the mark of thyroid cancer
Will thing;(14) ferritin (SF) is the mark of the tumours such as digestive system tumor, liver cancer, breast cancer, lung cancer;(15) β 2- microballoons
Albumen (β 2-MG) is in patient body fluids such as chronic lymphocytic leukemia, lymthoma, myeloma, lung cancer, thyroid cancer, nasopharyngeal carcinoma
Middle rise;(16) squamous cell antigen (SCC) is the tumor markerses such as cervical carcinoma, lung squamous cancer, the cancer of the esophagus.Clinically detect at present
The tumor markers overwhelming majority be not only present in malignant tumour, exist in benign tumour, even embryonic tissue, normal group
In knitting.Therefore, tumor markers has dynamic chek and multinomial joint inspection more valuable.So for numerous tumor-markers
Thing, clinically how to selectDifferent tumours understands some relatively special tumor markerses, as CA153 often appears in mammary gland
Cancer;CEA often appears in intestinal cancer, stomach cancer;CA19-9 often appears in intestinal cancer, cancer of pancreas;CA125 often appears in oophoroma etc..Face
Bed doctor can be according to the different mark of different tumor examinations.Same tumour or different types of tumour can have a kind of or several
Kind tumor markers is abnormal;Same tumor markers can occur in different tumours.To improve the auxiliary of tumor markers
Which kind of mark can carry out tumor markers joint-detection to diagnostic value as the follow-up visit monitoring index after treatment with determination,
The complementary tumor markers composition best of breed of several sensitivity of reasonable selection, specific performance, carries out joint-detection.In general
The joint-detection of tumor markers can improve the accuracy to diagnosing tumor.
Only with regard to Diagnostic Value of Several Serum Tumor Markers its joint-detection background of related itself general picture or overview for, can be with
Referring to following Chinese invention patent application case:CN200410041175.3、CN200510026780.8、
CN200610040051.2、CN200910064647.X。
Only for the microfluidic chip technology overall general picture of itself, it is first to may refer to famous micro-fluidic expert Lin Ping Cheng
The raw monograph " diagram Microfluid based Lab on a chip " gone out not long ago, the monograph is published via Science Press, the monograph for
Past of microflow control technique, now, and, vision of the future etc. etc., suffer from detail, be deep into the treatise of detail
Discuss.
So, the focal issue that this case that to have a talk below is paid special attention to.
The basic framework of micro-fluidic chip, including be etched with the substrate of small fluid course and fit together therewith
Cover plate, the small fluid course on the substrate, before upper cover plate is assembled, it is apparent on see to be exactly some micro-channels, to wait until
After covering cover plate thereon, just really closure forms the small fluid course, the conduit inner surface of the micro-channel together with
The part cover plate that surround the micro-channel forms described small fluid course together;So, it is clear that after assembling completes
The small fluid course, the major part of its inner surface area is the inner surface area of that micro-channel, in other words, should
The state or property of micro-channel inner surface substantially determine the integrality or property of the small fluid course;Therefore say, this
The inner surface state or inner surface property of micro-channel of the individual structure on substrate are key factors;In principle, it is any can
The material of its solid forms is kept or kept substantially, can be used to make substrate and cover plate, such as, it can act as substrate and lid
The material of piece can be monocrystalline silicon piece, quartz plate, sheet glass, high polymer for example dimethyl silicone polymer, polymethyl methacrylate,
Makrolon etc.;Certainly, the selection of substrate and the selection of cover plate be able to can also be differed with identical;From material consumption, make
From the point of view of difficulty and application popularization prospect etc. etc., not small difference, the especially choosing of that substrate between these materials be present
Material, have a great influence.
In various substrate making materials, dimethyl silicone polymer, i.e. PDMS, comparatively very easily shaping, at this
It is extremely simple that micro-channel is made on the substrate of sample, and the lower cost for material, base is made with the polydimethyl siloxane material
Piece, micro-channel, and the cover plate phase made with the cheap material such as glass or polypropylene or other plastic sheets are being suppressed or etched thereon
Coordinate, be a kind of more satisfactory selection seemingly;Certainly, patch material can also select to use cheap dimethyl silicone polymer
Material:So, this substrate selection is the scheme of polydimethyl siloxane material, and material is extremely cheap, and making is extremely simple, seems
It should be extremely easy to popularize, promote.
But thing is really not so simple.
First, this polydimethyl siloxane material, that is, the material that alphabetical PDMS is referred to of abridging, itself are a kind of strong
Strong hydrophobic material, micro-channel is built on this material, if without being operated for the modified of the micro-channel surface, that
, after overall assembling is completed, that is, after covering cover plate, because the micro-channel its inner surface in structure occupies most liquid
The inner surface of circulation road, then, its strong hydrophobic property of the PDMS micro-channels inner surface, is deciding factor, it can cause
Similar to the aqueous solution the fine liquid stream of polar liquid by becoming very difficult, its flow resistance is big, or even in general is micro-
Pump is all difficult to promote, certainly, if cover plate also selects to use the PDMS material, then, problem is substantially identical, similar;
Therefore, among prior art, modification is modified particular for the micro-channel inner surface on the PDMS material, is necessary behaviour
Make;So, this is pretty troublesome for the modified operation of PDMS micro-channel inner surfacesThat falls nor this problem, is formed tight
Weight technology puzzlement, be another problem:PDMS polymer molecules inside its body phase of this PDMS material substrate have automatic
The characteristic diffuse to the surface, migrated, the spy that this substrate body phase inside PDMS polymer molecules are diffused to the surface, migrated automatically
Property, the state after modification by its inner surface of that micro-channel of surface modifying and decorating will be caused can not to maintain long enough
Time, the holding time for micro-channel its inner surface state after that is surface-modified be substantially only sufficient to complete laboratory internal
The time of test experiments needs;In other words, by surface modification or the PDMS micro-channel inner surfaces of surface modification, it is modified
The surface state that is formed can not be lasting afterwards or after saying modification, but soon automatically tends to or say and become surface modification again
Surface state before, the strong hydrophobic surface state of that script is returned in the shorter time, then, just think, this
The micro-fluidic chip of sample can largely make, mass storage, be widely popularized, and answer is it is obvious that is, impossible.This
Micro-channel on PDMS material, if not doing surface modification, similar to the aqueous solution the fine liquid stream of polar solvent can not pump it is logical
Cross, chip also cannot just use;And if having done surface modification, its state after modifying can not be persistently kept again, or together
Sample can not popularization and application.
So, how to accomplish that substrate can either be made using cheap PDMS material, and the microflute can be released
Road inner surface decorating state can not persistently, chip can not largely make, largely lay in and then be widely popularized and such a make ability
The puzzlement that the numerous professionals in domain are entangled with for a long time, the highly difficult problem that exactly one its obvious technology barrier can not despise.
Be present many year in the highly difficult problem, so far, not yet properly settled.
Second, the PDMS material of non-surface modification, it is stated that, its surface is strongly hydrophobic above, this strong hydrophobic
Material surface and also have another problem, that is, this strong hydrophobic PDMS surfaces can adsorb large biological molecule, and
And these adsorbed large biological molecules can also further depression further on PDMS surfaces, gradually fall into it is gradually deep, until
It is heavy to be trapped within the body phase of PDMS substrates, in fact, this process, partly it is also due to PDMS material body phase interior polymer
Molecule, which has, to be diffused to the surface, caused by travel motion;Such case, it can also be explained from another angle, i.e. continue not
Disconnectedly from inside PDMS body phases to those polymer molecules of its diffusion into the surface, migration, its result moved, be little by little by that
It has been involved in a bit by the large biological molecule of adsorption within the body phase of PDMS substrates, briefly, these adsorbed biologies
Macromolecular is exactly to be swallowed up by PDMS substrate body phases;So, this PDMS substrates body phase swallows up the phenomenon of large biological molecule, its institute
Caused by influence, necessarily cause the severe deviations of all kinds of test data of experiment for being related to large biological molecule.
As described above, the problem of PDMS substrates, is, its not only adsorption large biological molecule, and swallow up biological big point
Son, so, as the large biological molecule of experiment test object, its disappearance will not stop because surface saturation is adsorbed, and
It is, it is constantly adsorbed, also constantly swallowed up.
On PDMS substrates, its body phase is constantly swallowed up and tests showing for associated biomolecule macromolecular in related experiment test process
As, it is to say that another kind, which is explained, substantial amounts of Minute pores in PDMS body phases be present, associated biomolecule macromolecular by after adsorption,
Depression enters these Minute pores, and then is swallowed up;However, inventor thinks, those can allow the sky of miniature scale
Qi leel squeezes into the Minute pores therebetween, not equal to saying that they also can directly allow the large biological molecule of relative large scale to enter
Enter, both difference on yardstick are huge, must not make sweeping generalizations.Explanation is bypassed, in any case, as dependence test analysis object
Large biological molecule is adsorbed by PDMS substrate micro-channels inner surface, and then is constantly swallowed up by PDMS substrate body phases, and this is person in charge of reception at ceremonies
Phenomenon existing for sight.
, can be from containment PDMS surfaces pair in order to prevent swallow up effect of this PDMS substrate bodies relative to large biological molecule
The absorption of large biological molecule addresses, and method is chemically modified modification aiming at the PDMS material surface, for
For PDMS is the situation of substrate material, modification exactly is chemically modified to the surface of described micro-channel part, by changing
The micro-channel inner surface of modification is learned, its absorption to large biological molecule can be contained, and then avoid large biological molecule
Swallowed up by PDMS substrate body phases;But or that old problem, that is, the chemical modification on PDMS material surface is modified
Surface state afterwards can not persistently be kept, the polymer molecule inside the PDMS substrate body phases its diffuse to the surface, move automatically
The process of shifting, it soon can become that micro-channel inner surface state being modified by surface chemical modification again script strong and dredge
Water and the state of strong adsorption large biological molecule, in other words, no matter how professionals in the field turn from side to side, the PDMS bases
Its micro-channel inner surface of piece is always rapidly to strong hydrophobic surface state evolution.
So, how can either obtain that PDMS material price is extremely cheap, substrate makes extremely easy benefit, and can is enough
Reach and contain the absorption process of the PDMS substrate micro-channel inner surfaces to large biological molecule for a long time, and then prevent PDMS substrate body phases
The effect of swallowing up to large biological molecule so that related chip manufactured goods be able to maintain that one it is prolonged enough, reasonably guarantee the quality
Phase, it is exactly a very intractable problem.The problem equally makes this area numerous as another problem addressed above
Professional is entangled with, perplexed for a long time, and the problem is equally the highly difficult problem that its obvious technology barrier can not despise.
Also be present many year in the problem, so far, also not yet properly settled.
Third, as described above, the PDMS micro-channel inner surfaces are strongly hydrophobic, and targetedly surface chemical modification or surface
Chemical modification is difficult to persistently again, therefore, actually can only still belong to effective in the surface state after the modification of its surface or surface modification
It is short-term within use it;If having had been subjected to that ofer short duration period of validity, and still by force if use, due to table
Again close to hydrophobic state, bigger flowing is then already certainly existed using usual Micropump driving sample liquid stream for surface state
Resistance, so, just by increasing Micropump pump power and pumping pressure test liquid can only be forced to flow to target direction flowing, as above
Described, this PDMS material is soft, pumps sample liquid stream with too high, mechanical pumping pressure, will cause the substrate
Bubbling, expanded, distortion, deformation, also, this high pressure feelings occur for the micro-channel that its sample introduction end includes sample introduction end near zone
Under condition, the stripping between substrate and cover plate also easily occurs in the sample introduction end and its micro-channel of near zone and its periphery,
Under this situation, the crack for the appearance that sample solution will enter after the stripping between the substrate and cover plate formed and it is horizontal everywhere
Stream, this actually results in the damage of the micro-fluidic chip;It is certainly, not in place if surface modification or surface modification script,
It can cause said circumstances occur within the of short duration usual term of validity;The feelings of liquid stream driving are being carried out using additional Micropump merely
Under condition, the above-mentioned problem exists all the time.As described above, if any surface modification or surface modification etc. were not done completely
Pre action, then, the above-mentioned problem will be even more serious, is roused even without micro-channel described in sample introduction end and its near zone occurs
The problems such as being peeled off between bubble, expanded, distortion, deformation and substrate and cover plate, merely because the flow resistance is excessive, using high pressure
Micropump also may not can drive sample liquid stream to be marched forward towards terminal side.
The content of the invention
The technical problem to be solved by the invention is to provide a package solution, while solve to address above
Three aspect a series of problem actually mutually involved together, also, by the solution be applied to structure one
The new micro-fluidic chips that can carry out examination simultaneously while detection than more typical primary tumor mark for six kinds of kind
Device.
The present invention solves the technical problem by following scheme, and the device that the program provides is one kind using PDMS as substrate
Dual drive co-detections of tumor markers in benign chip apparatus, the program is characterized in that the structure of the device includes micro-fluidic chip,
The structure of the micro-fluidic chip includes being bonded to each other the substrate and cover plate of installing together, and the substrate and cover plate are plate object
Or the channel structure via mould pressing process or etching technics formation is contained in tablet, that face towards the cover plate of the substrate,
It is bonded to each other the substrate being installed together and has been built into the micro-fluidic chip containing pipeline configuration jointly with the cover plate, the pipeline
Locations of structures be located at the juncture area that the substrate and the cover plate are bonded to each other, the both ends of the pipeline respectively with the micro-fluidic chip
Sample introduction end and terminal connection, the sample introduction end is the injection end of the micro-fluidic chip sample solution, and the terminal is that this is micro-fluidic
The terminal that sample solution flows in its chip when the actual sample introduction of chip is tested, the terminal are located remotely from each other with the sample introduction end, the terminal
Between 3 centimetres and 10 centimetres, the terminal links together with terminal liquid pool at the distance between the sample introduction end, the terminal liquid
The profile of its structure of pond is in pond shape, pit shape or cup-shaped, and the terminal liquid pool is used to receive the examination for flowing to terminal via the pipeline
Sample solution, in the pipeline on diverse location in order or backward is equiped with working electrode and to electrode and reference electrode,
The order refers to that its locations of structures of the reference electrode refers to the reference closer to the terminal location, the backward
Electrode structure is located closer to the sample introduction end position, and the working electrode is by conductive electrode and is attached to electric conductivity electricity
The gold size sensitive membrane for having embedded tumor markers antibody on extremely is formed, and parallel construction is presented in the construction of the pipeline, described in simultaneously
The pipeline of connection construction is made up of six lateral parallel connections, and its appearance profile of the pipeline of the presentation parallel construction is similar to
The profile of parallel circuit, the quantity of the working electrode is six, and the installation position of six working electrodes is respectively positioned at described
In six laterals, and, the tumor markers antibody difference in its top layer gold size sensitivity membrane structure of six working electrodes
It is the six kinds of tumor markers antibody materials that can be specifically bound to tumor markers antigen, six kinds of antibody materials are swollen respectively
Tumor markers antibody A FP, CEA, PSA, CA125, CA19-9 and CA15-3, the antigen are the antigen of broad sense, and the antibody is
The antibody of broad sense, its material of the working electrode are argent material, gold material, carbon material or thermal decomposition conducting polymer
Column, sheet or thread is presented in material, its pattern of the working electrode, and its material of the substrate is dimethyl silicone polymer material,
Its surface of the substrate is the surface of primary form, the surface of the primary form its be intended to refer to and do not pass through any surface chemistry
The surface of the primary form of the material of modification or any surface chemical modification, the structure of the device also include hinge-type fixture,
The hinge-type fixture its appearance profile likeness in form hinge, the hinge-type fixture is by two hinges being mutually hinged and runs through
A fastening screw and the use for matching with the fastening screw and being connected together with the fastening screw for two hinges
Formed in the nut of manual fastening and hand break loose, two hinges of the hinge-type fixture are respectively mutually drawn close and clamped with its tip
The micro-fluidic chip, the tip are positioned in the locations of structures of the neighbouring terminal of the micro-fluidic chip, at least in
A hinge on attach fixation be equiped with miniature ultrasonic transducer units, and, higher-order of oscillation electric signal transmission cable, should
One end of higher-order of oscillation electric signal transmission cable links together with the miniature ultrasonic transducer units;The hinge-type fixture provides
One facilitates the function that the device is disassembled;Its major function of the miniature ultrasonic transducer units is surveyed in the actual sample introduction of micro-fluidic chip
During examination, the ultrasonic wave launched using it reduces the boundary between sample solution and the inwall of its inner passage of micro-fluidic chip
Face tension force, can be compatible, also, utilizes the sample introduction end and the terminal and miniature ultrasonic transducer units installing position
The distance between put the difference on difference and its ultrasonic intensity experienced, its interface of sample introduction end described in induced synthesis
Difference between power and the terminal its interfacial tension, the interfacial tension difference between the micro-fluidic chip both ends can be micro- at this
Pressure gap is formed between the both ends of fluidic chip, the pressure gap can drive sample solution to the end flow;This is micro-
The ultrasonic wave that type ultrasonic transducer its function also includes being launched with it check large biological molecule contained in sample its
Absorption on its inner passage inner surface of the micro-fluidic chip, and then check the substrate of the dimethyl silicone polymer material its body phase
The effect of swallowing up to the large biological molecule;It is soft and have the substrate of the dimethyl silicone polymer material of elasticity its function include with
Its property to the strong absorption of ultrasonic wave, ultrasonic wave is absorbed strongly, and thereby the micro-fluidic chip terminal to should
The rapid decrement of ultrasonic intensity is realized within limited short distance between sample introduction end;And Micropump, the Micropump and the sample introduction
End connection;The function of the Micropump is the interface between the inwall of the sample solution and its inner passage of micro-fluidic chip
Power is reduced, under the increased precondition of alternate compatibility by the ul-trasonic irradiation, is come with the mechanicalness pumping strength of the Micropump
Interfacial tension difference its caused driving force between the both ends of ultrasonic wave induction is supported mutually, adjusted mutually
Fit, be mutually coupled, the strength that one driving test liquid flows to the terminal direction flowing is pooled in a manner of Collaboration, should
Some high hydroscopic resin particles are filled with terminal liquid pool, its opening end of the terminal liquid pool is covered by breathable microporous film.
Only for the word of high hydroscopic resin one art-recognized meanings of itself, come for the professional of chemical field
Say, be known.
The high hydroscopic resin is commercially available.
Only for the word of breathable microporous film one art-recognized meanings of itself, for the professional of technical field of membrane,
It is known.
The breathable microporous film is commercially available.
The tumor markers antibody is the antibody of broad sense, and the antibody of the broad sense refers to possessing antibody function or functionally
Can occur to combine with tumor markers involved by various corresponding clinics and form immune complex or exempt from similar to antibody
The material of the analog of epidemic disease compound;The tumor markers antigen is the antigen of broad sense, and the antigen of the broad sense refers to can
Using corresponding antibodies or the material for being functionally similar to antibody need to differentiate, detect involved by the various clinics of enzyme mark detection
Tumor markers.
Described miniature ultrasonic transducer units can certainly be all installed in two hinges;But only install one
Individual miniature ultrasonic transducer units are dealt with enough to be used.
The word of hinge one art-recognized meanings of itself are known.
The word of Micropump one art-recognized meanings of itself are known for the professional in micro-fluidic chip field.
The Micropump both can be the Micropump of external form;The Micropump can also do into or say the embedded micro-fluidic chip
The Micropump of the built in version of its internal sample introduction end structure position or the sample introduction end Near-neighbor Structure position.
For example miniature piezoelectric pump of the Micropump, miniature peristaltic pump or miniature air driven pump.
The gold size sensitive membrane is to be sufficiently mixed chitosan gold size solution and tumor markers antibody-solutions uniformly, is used a little
Sample instrument point sample is coated on specified structure position, and forms its drying and forming-film.Tumor markers in the gold size sensitive membrane
Antibody is the tumor markers antibody of horseradish peroxidase or glucose oxidase mark, and the gold size sensitive membrane has been wrapped
Containing introducing complementary medium therein for the above-mentioned each tumor markers antibody of fixation, the complementary medium such as chitosan,
Cellulose acetate, gelatin be therein a kind of or their mixture.
The pipeline in the microfluidic chip structure includes the lateral, and its internal diameter size may each be any
Selected size, still, for using prepare liquid sample less as far as possible and reducing the consideration of reagent loss etc., the pipeline includes
The passage of the preferred capillary level of lateral, the passage of the capillary level imply that its internal diameter and the capillary on ordinary meaning
The suitable passage of the internal diameter of pipe.The shape of cross section of its inner passage of capillary can be arbitrary shape, described transversal
Face shape is for example circular, oval, square, rectangle, bar shaped, naturally it is also possible to be the linear of bending, also, institute arbitrarily be present
The interior shape of capillary is stated with the extension of pipeline, the shape of cross section of different parts can also allow to be different shapes.
Only for the word of capillary one, its art-recognized meanings is known.
What is be related in structure is the electrode of microsize to electrode and reference electrode, and its electrode shape, which may each be, appoints
The selected shape of meaning, the arbitrarily selected shape such as column, sheet, strip or thread etc..It is described to electrode and institute
The art-recognized meanings for stating the reference electrode vocabulary of itself are known.
Only for professional of the word of ultrasonic transducer one art-recognized meanings of itself for ultrasonic technology field,
It is known.
Various sizes, variously-shaped ultrasonic transducer are commercially available;Its size of commercially available miniature ultrasonic transducer units
It may diminish to the magnitude only calculated with millimeter.
Only with regard to miniature ultrasonic transducer units its technique for fixing on general industry application solid body surface its
It is known general technology for the professional in ultrasonic technology field for body.This case is not to this expansion superfluous words.
Only with regard to naked PDMS substrates itself micro-channel molding or lithographic technique for, be open-and-shut known skill
Art.
The industrial products market of involved its all size of higher-order of oscillation electric signal transmission cable is on sale.
The structure of the device can also include higher-order of oscillation electric signal generator;The higher-order of oscillation electric signal transmission cable
Its other end can be connected with the higher-order of oscillation electric signal generator.
The involved higher-order of oscillation electric signal generator technology of itself, come for the professional in ultrasonic technology field
Say, be simple and known;The higher-order of oscillation electric signal generator can customize to ultrasonic instrument specialized factory.
The preferred scope of its specified ultrasonic wave transmission power of the miniature ultrasonic transducer units is between 5 milliwatts and 5000 milliwatts
Between;The preferred scope of the frequency of its ultrasonic wave operationally launched of the miniature ultrasonic transducer units be between 100KHz with
Between 12MHz.
This case device can further include some annexes certainly, and the annex is such as multiple tracks electrochemical workstation
Deng the art-recognized meanings of the multiple tracks electrochemical workstation are known.The each work being related in this case microfluidic chip structure
Electrode and to electrode and reference electrode etc., special it can get lines crossed and the multiple tracks electrochemical workstation via corresponding respectively
The corresponding interface coupled.It is described that special to get lines crossed be for by each phase of each electrode and the multiple tracks electrochemical workstation
Answer the private cable that interface is coupled to each other.The micro-fluidic chip in this case device, its structure can also include micro-valve,
The quantity of the micro-valve is unlimited, and according to being actually needed, the micro-valve can be installed in any need in the microfluidic chip structure
Position to be mounted;The word of micro-valve one is for the professional of micro fluidic chip technical field, the art-recognized meanings of itself
It is known;The micro-valve itself manufacturing technology and the use of technology is also known;The component that the micro-valve is not required.
The diameter of the working electrode can allow to be that any setting is easily installed the suitable diameter used, still,
It is recommending or say preferable its scope of the diameter between 0.1 micron to 2000 microns;The length of the working electrode can
To allow to be that any setting is easily installed the length used, it is however recommended to or to say the preferable length its scope be 1
Micron is between 15000 microns.
It is installed in by spraying or point sample instrument point sample or the coating of other appropriate process described in the working electrode surface layer
Gold size sensitive membrane, its thicknesses of layers can allow be any setting treat sample measuring liquid occur electrical signals response thickness,
It is however recommended to thickness preferable thickness is between 10 nanometers and 200 nanometers in other words.
The cover plate in chip structure, its material can allow to be any electrical insulating property material, such as:Polypropylene,
Glass, polymethyl methacrylate, dimethyl silicone polymer, etc., in order to make smaller size of micro-fluidic chip, for example do
Into the micro-fluidic chip of only 2.0 centimetres to 3.0 centimetres of super-small of length, and realized in the extremely short distance to ultrasonic wave
Extremely fast decay, can preferably dimethyl silicone polymer be used as cover plate.Certainly, selected on large-sized micro-fluidic chip
Using dimethyl silicone polymer it is used as the cover plate, and this case technical scheme is allowed.
Described its thickness of cover plate and substrate can allow be any setting the thickness for being easy to assembling, the thickness of recommendation or say
Preferable thickness is between 1.0 millimeters and 5.0 millimeters.Less thickness is advantageous to save material.
The application method of this case micro-fluidic chip:
This case drives liquid stream in the capillary channel of the six-channel microfluidic chip with dual drive coupling operating mode
Middle flowing, joint-detection is carried out to six kinds of classifiable tumor mark antigens respectively using multi-channel electrochemical analyzer device.
The specific detection of this case micro-fluidic chip is as follows using step:
1st, blood serum sample liquid is added in micro-pipe road, under dual drive coupling operating mode driving, various tumour marks
The corresponding horseradish peroxidase-labeled that will thing antigen molecule is embedded by gold size sensitive membrane on electrode surface in each passage swells
Tumor markers antibody capture.
2nd, the tumor markers antibody of horseradish peroxidase-labeled is formed with the tumor markers antigen in blood serum sample
Immune complex.
3rd, using multi-channel electrochemical analyzer, the electron mediators such as catechol are added, it is above-mentioned using amperometric detection
Curent change caused by reaction, it is derived from the species and content of various analytes.
4th, result is subjected to comprehensive analysis, comprehensive diagnos is carried out to tumor markers antigen.
It is an advantage of the invention that its close position positions the hinge-type folder in the terminal of the micro-fluidic chip
Tool, the miniature ultrasonic transducer units installed with institute's attaching in the hinge-type fixture its hinge, the low-power launched using it, height
The ultrasonic wave of frequent section so that without in strong hydrophobic micro-fluidic chip of surface chemical modification or surface chemical modification
Compatibility between its tube wall of portion's pipeline and the test object aqueous solution is significantly increased, and this is sample liquid stream by providing one
Realistic possibility;Meanwhile using its strong absorbability to ultrasonic wave of dimethyl silicone polymer substrate, in shorter distance
It is interior, it is, in from the terminal to the very short distance of only several centimeters yardsticks the sample introduction end, it is strong to reach ultrasonic wave
The rapid decrement of degree, thereby causes the difference of the interfacial tension at the both ends of the micro-fluidic chip, between the both ends
The difference of interfacial tension can cause a kind of driving force, and this kind its function of driving force caused by interfacial tension difference is to drive
Sample liquid stream is caught up with to be flowed originally in strong hydrophobic capillary channel to the terminal direction;And simultaneous institute in structure
Micropump is stated, its function is that the interfacial tension between the inwall of the sample solution and its inner passage of micro-fluidic chip is by this
Ul-trasonic irradiation and reduce, under the increased precondition of alternate compatibility, come with the mechanicalness of Micropump pumping strength super with this
Interfacial tension difference its caused driving force between the both ends of sound wave induction supports mutually, adjustment, mutually mutually
Coupling, the strength that one driving test liquid flows to the terminal direction flowing is pooled in a manner of Collaboration;The Micropump
In the presence of so that its ultrasonic wave emissive porwer of the miniature ultrasonic transducer units can be allowed to appropriate reduction, and this is for detection object
In the situation containing ultrasonic wave sensitive composition be particularly suitable for;And depositing by the ultrasonic transducer and its radiated ultrasonic wave
, it is possible to increase alternate compatibility, interfacial tension is reduced, and provide the both ends interfacial tension difference its caused special drive
Amount of power, then, in this case, its flow resistance in the micro-channel of sample liquid stream is greatly reduced, correspondingly, the Micropump
Its running resistance is greatly reduced, and so, the Micropump just can be to carry out being directed to the sample solution than relatively low pumping pressure
Pumping work, because mechanical pumping pressure is greatly reduced, therefore, in such a situation, be just not susceptible to because entering
The micro-channel bubbling of the sample introduction end and its near zone caused by sample terminal tool pumping pressure is excessive, expansion, deformation,
Between distortion and the region substrate and cover plate the problems such as stripping etc.;This case dual drive couples the scheme of running and added
For the handling of sample fluid flow action, can allow for using ultrasonic intensity, ultrasonic frequency, Micropump pumping work(
Rate, Micropump pumping pressure etc. multiple indexs are to be directed to the flow rate of the flowing, flowing action includes flow forward or pause
Flowing accelerates flowing etc. flowing action progress multi-parameter accurately to manipulate;The scheme operated by this case dual drive coupling,
Repaiied entirely without any surface chemistry must be carried out to the substrate of the dimethyl silicone polymer material its micro-channel etc. relevant surfaces
Decorations or surface chemical modification, have altogether dispensed with the laborious procedures of the surface chemical modification or surface chemical modification;On the other hand, should
The ultrasonic wave of low-power, high-frequency band, additionally it is possible to contain the large biological molecule in sample in the literalness naked poly dimethyl
Absorption on its inner surface of pipeline of siloxanes substrate, and then contain that its body phase of dimethyl silicone polymer substrate is big to the biology
The effect of swallowing up of molecule;The Reversible binding thing of the antigen, antibody and antigen and antibody is all to belong to described biology certainly
The type of macromolecular;Because described suction-operated and the described effect of swallowing up effectively are contained, therefore, dependence test knot
Fruit will be better able to objectively reflect actual conditions;The effect of the low-power, high-frequency band ultrasonic wave, it is certainly also anti-including facilitating
The quick of Reversible binding reaction between former, antibody is reached, and this causes dependence test operation can be with than the completion of faster speed.
As described above, the presence of the Micropump so that its ultrasonic wave emissive porwer of the miniature ultrasonic transducer units can be permitted
Perhaps appropriateness reduces, then, the feature helps to protect its sensitive coating of the working electrode, is allowed to from ultrasound injury.
Based on this case scheme, completely without carrying out coming to the surface for its relevant surfaces of dimethyl silicone polymer substrate
Modification or surface chemical modification operation are learned, therefore, this surface chemical modification layer or surface chemical modification layer not need
In the presence of, then, its body phase interior polymer molecule of the dimethyl silicone polymer substrate constantly diffuses to the surface, migrates its institute automatically
It is caused that the damaging influence of the surface chemical modification layer or surface chemical modification layer is also just not present.
It is related that the technical scheme of this case has dissolved its application to dimethyl silicone polymer substrate addressed above totally
A series of technical barriers.Based on this case scheme, this kind be very cheap and the easily dimethyl silicone polymer material of processing and fabricating
Material be just possible in the micro-fluidic chip its prepare, production, using etc. field play bigger effect.
The miniature ultrasonic transducer units have been installed in fixation in the hinge-type fixture its hinge in this case structure, the structure
A function of facilitating the device to disassemble is provided, in this way, the hinge-type fixture is together with miniature ultrasonic appended in its hinge
Transducer just easily can be mutually disengaged with the micro-fluidic chip, then, the component that the part can freely depart from just can be good
Property is re-used cyclically many times;The architectural feature is advantageous to save the use cost of the device.
The framework of its large-scale integrated of this case micro-fluidic chip, it is determined among actual test application, to serum
The requirement of sample is smaller, and this contributes to the body and mind damage for reducing related subject.
Brief description of the drawings
Fig. 1 is its rough outside side view of this case micro flow control chip device.
In figure, 1 is hinge-type fixture, and 2 sign linkwork positions, 3 be fastening screw, and 4 be higher-order of oscillation telecommunication
Number transmission cable, 5 be miniature ultrasonic transducer units, and 6,11 be two different hinges of locations of structures respectively, and 7 be cover plate, and 8 be base
Piece, 9 be sample introduction end, and 10 be terminal, and 12 be nut, and 13 be infusion tube, and 14 be Micropump;The hinge-type clamp structure in legend
Only it is the legend structure of signal, actual its structure of the hinge-type fixture is not limited to the legend hinge-type clamp structure;In legend
Arrow indicate the micro-fluidic chip its in actual motion, by pressure at two ends difference drive, the flow direction of its sample liquid stream.
Embodiment
In this case that Fig. 1 is shown embodiment, its main points of the example are that the structure of the device includes micro-fluidic chip,
The structure of the micro-fluidic chip includes being bonded to each other the substrate 8 and cover plate 7 of installing together, and the substrate 8 and cover plate 7 are plate
The conduit via mould pressing process or etching technics formation is contained in shape thing or tablet, that face towards the cover plate 7 of the substrate 8
Structure, it is bonded to each other the substrate 8 being installed together and has been built into the micro-fluidic core containing pipeline configuration jointly with the cover plate 7
Piece, the locations of structures of the pipeline are located at the juncture area that the substrate 8 is bonded to each other with the cover plate 7, the both ends of the pipeline respectively with
The sample introduction end 9 of the micro-fluidic chip and terminal 10 connect, and the sample introduction end 9 is the injection end of the micro-fluidic chip sample solution,
The terminal 10 is the terminal of sample solution flowing in its chip when the actual sample introduction of the micro-fluidic chip is tested, and the terminal 10 is entered with this
Sample end 9 is located remotely from each other, and the distance between the terminal 10 and the sample introduction end 9 are between 3 centimetres and 10 centimetres, the terminal 10 and end
End liquid pool links together, and the profile of its structure of the terminal liquid pool be in pond shape, pit shape or cup-shaped, and the terminal liquid pool is for receiving
The sample solution of terminal 10 is flow to via the pipeline, in the pipeline on diverse location in order or backward be equiped with work electricity
Pole and to electrode and reference electrode, the order refers to its locations of structures of the reference electrode closer to the terminal 10
Position, the backward refer to the reference electrode locations of structures closer to the position of sample introduction end 9, and the working electrode is by leading
Conductive electrodes and the gold size sensitive membrane for having embedded tumor markers antibody being attached on the conductive electrode are formed, the pipeline
Construction parallel construction is presented, the pipeline in parallel construction is made up of six lateral parallel connections, the presentation structure in parallel
The pipeline its appearance profile made is similar to the profile of parallel circuit, and the quantity of the working electrode is six, six works
The installation position for making electrode is located in six laterals respectively, and, its top layer gold size of six working electrodes is sensitive
Tumor markers antibody in membrane structure is that the six kinds of tumor markerses that can be specifically bound to tumor markers antigen resist respectively
Body material, six kinds of antibody materials are tumor markers antibody A FP, CEA, PSA, CA125, CA19-9 and CA15-3 respectively, institute
The antigen that antigen is broad sense is stated, the antibody is the antibody of broad sense, and its material of the working electrode is argent material, gold material
Column, sheet or thread, the base is presented in matter, carbon material or thermal decomposition conducting polymer material, its pattern of the working electrode
Its material of piece 8 is dimethyl silicone polymer material, and its surface of substrate 8 is the surface of primary form, the surface of the primary form
It is intended to refer to not by any surface chemical modification or the table of the primary form of the material of any surface chemical modification
Face, the structure of the device also include hinge-type fixture 1, its appearance profile likeness in form hinge of hinge-type fixture 1, the hinge-type fixture
1 by two hinges 6,11 for being mutually hinged and through a fastening screw 3 of two hinges 6,11 and one
Matched with the fastening screw 3 and be used for the structure of nut 12 of fastening and hand break loose manually with what the fastening screw 3 connected together
Into the nut 12 employs in this example is easier manually operated butterfly nut, and butterfly nut is commercially available, the hinge-type
Two hinges 6,11 of fixture 1 are respectively mutually drawn close with its tip and clamp the micro-fluidic chip, and the tip is positioned at the miniflow
Control chip the neighbouring terminal 10 locations of structures on, in a hinge at least in attach fixation be equiped with it is micro-
Type ultrasonic transducer, in this example, the miniature ultrasonic transducer units 5 are to attach to be fixed in hinge 6, and, higher-order of oscillation electricity
Signal transmission cable 4, one end of the higher-order of oscillation electric signal transmission cable 4 link together with the miniature ultrasonic transducer units 5;
The hinge-type fixture 1 provides a function of facilitating the device to disassemble;Its major function of the miniature ultrasonic transducer units 5 be
During the test of micro-fluidic chip actual sample introduction, the ultrasonic wave launched using it reduces sample solution and the micro-fluidic chip in it
Interfacial tension between the inwall of portion's passage, can be compatible, also, using the sample introduction end 9 and the terminal 10 with
Difference in the distance between the installation position of miniature ultrasonic transducer units 5 difference and its ultrasonic intensity experienced,
Difference between its interfacial tension of sample introduction end 9 described in induced synthesis and the terminal 10 its interfacial tension, the micro-fluidic chip should
Interfacial tension difference between both ends 9,10 can form pressure gap between the both ends 9,10 of the micro-fluidic chip, the pressure
Difference can drive sample solution to be flowed to the direction of terminal 10;Its function of the miniature ultrasonic transducer units 5 also includes with its institute
The ultrasonic wave of transmitting check in sample contained large biological molecule its on the micro-fluidic chip its inner passage inner surface
Absorption, and then check swallow up effect of its body phase of the substrate 8 of the dimethyl silicone polymer material to the large biological molecule;Softness is simultaneously
Its function of the substrate 8 of the dimethyl silicone polymer material of tool elasticity is included with its property to the strong absorption of ultrasonic wave, to super
Sound wave is absorbed strongly, and the limited short distance thereby arrived between the sample introduction end 9 in the micro-fluidic chip terminal 10 it
Inside realize the rapid decrement of ultrasonic intensity;And Micropump 14, the Micropump 14 are connected with the sample introduction end 9;The function of the Micropump 14
It is that the interfacial tension between the inwall of the sample solution and its inner passage of micro-fluidic chip is dropped by the ul-trasonic irradiation
Under low, the alternate increased precondition of compatibility, the institute with ultrasonic wave induction is come with the mechanicalness pumping strength of the Micropump 14
State the interfacial tension difference between both ends 9,10 its caused driving force to support mutually, adjust mutually, be mutually coupled, with association
Mode with running pools one strength for driving test liquid to flow to the direction of terminal 10 flowing, is filled in the terminal liquid pool
There are some high hydroscopic resin particles, its opening end of the terminal liquid pool is covered by breathable microporous film.
Arrow in legend indicate the micro-fluidic chip its in actual motion, by both ends 9,10 pressure differentials drive,
The flow direction of its sample liquid stream.
Fig. 1 is depicted without the associate members such as the higher-order of oscillation electric signal generator.
The Micropump 14 can customize to specialized factory.
Described its main body of hinge-type fixture can simply be changed a social system using commercially available hinge;Can also be to hardware processing factory
Customization.
Involved miniature ultrasonic transducer units 5 are commercially available;It can also be customized to ultrasonic transducer producer.
Involved higher-order of oscillation electric signal transmission cable 4 is commercially available;Can also be special to ultrasonic transducer producer or cable
Industry producer customizes.
Involved higher-order of oscillation electric signal generator market has the product close to needs commercially available;It can also determine to relevant manufacturers
System.
Its inner passage of the micro-fluidic chip involved by this case is the pipeline of hydrophobic capillary form.
The Micropump both can be the Micropump of external form;The Micropump can also do into or say the embedded micro-fluidic chip
The Micropump of the built in version of its internal sample introduction end structure position or the sample introduction end Near-neighbor Structure position.Micropump in legend is external
The Micropump of form;The Micropump can certainly do into or say sample introduction end or its neighbour knot inside the embedded microfluidic chip structure
The Micropump of the built in version of structure position, its basic structure key element are identical with the Micropump of external form.
The multiple tracks electrochemical workstation is commercially available;The multiple tracks electrochemical workstation can also be according to specific needs to phase
Close specialized factory's customization.
In view of the pipeline of the presentation parallel construction its form foot that this case related text above expresses that it is described
It is enough clear, the concrete form of the pipeline in this kind of micro-fluidic chip of this case is no longer specifically illustrating in this case embodiment.
Antibody described in this case refers to the antibody of broad sense;Antigen described in this case refers to the antigen of broad sense;Exempt from described in this case
Epidemic disease compound refers to the immune complex of broad sense.
Claims (10)
1. using PDMS as the co-detections of tumor markers in benign chip apparatus of the dual drive of substrate, it is characterised in that the structure of the device
Including micro-fluidic chip, the structure of the micro-fluidic chip includes being bonded to each other the substrate and cover plate of installing together, the substrate
It is plate object or tablet with cover plate, that face towards the cover plate of the substrate is contained via mould pressing process or etching technics
The channel structure of formation, it is bonded to each other the substrate being installed together and has been built into jointly containing the micro- of pipeline configuration with the cover plate
Fluidic chip, the locations of structures of the pipeline are located at the juncture area that the substrate is bonded to each other with the cover plate, the both ends point of the pipeline
It is not connected with the sample introduction end of the micro-fluidic chip and terminal, the sample introduction end is the injection end of the micro-fluidic chip sample solution,
The terminal is the terminal of sample solution flowing in its chip when the actual sample introduction of the micro-fluidic chip is tested, the terminal and the sample introduction end
It is located remotely from each other, between 3 centimetres and 10 centimetres, the terminal contacts with terminal liquid pool for the distance between the terminal and the sample introduction end
Together, the profile of its structure of the terminal liquid pool is in pond shape, pit shape or cup-shaped, and the terminal liquid pool is used to receive via the pipeline
The sample solution of terminal is flow to, in the pipeline on diverse location in order or backward is equiped with working electrode and to electrode
And reference electrode, the order refer to its locations of structures of the reference electrode closer to the terminal location, the backward
The reference electrode locations of structures is referred to closer to the sample introduction end position, the working electrode is by conductive electrode and patch
The gold size sensitive membrane for having embedded tumor markers antibody being attached on the conductive electrode is formed, and parallel connection is presented in the construction of the pipeline
Construction, the pipeline in parallel construction is made up of six lateral parallel connections, the pipeline of the presentation parallel construction its
Appearance profile is similar to the profile of parallel circuit, and the quantity of the working electrode is six, the installing position of six working electrodes
Put respectively in six laterals, and, the tumour in its top layer gold size sensitivity membrane structure of six working electrodes
Mark antibody is the six kinds of tumor markers antibody materials that can be specifically bound to tumor markers antigen respectively, and this six kinds anti-
Body material is tumor markers antibody A FP, CEA, PSA, CA125, CA19-9 and CA15-3 respectively, and the antigen is the anti-of broad sense
Original, the antibody are the antibody of broad sense, and its material of the working electrode is argent material, gold material, carbon material or heat
Conducting polymer material is decomposed, column, sheet or thread is presented in its pattern of the working electrode, and its material of the substrate is poly- diformazan
Radical siloxane material, its surface of the substrate are the surfaces of primary form, the surface of the primary form its be intended to refer to and do not pass through
The surface of the primary form of the material of any surface chemical modification or any surface chemical modification is crossed, the structure of the device is also wrapped
Include hinge-type fixture, the hinge-type fixture its appearance profile likeness in form hinge, the hinge-type fixture by be mutually hinged two
Individual hinge and matched through a fastening screw of two hinges and one with the fastening screw and with the fastening screw
The nut of fastening and hand break loose manually that is used for connect together is formed, and two hinges of the hinge-type fixture are respectively with its tip
Mutually draw close and clamp the micro-fluidic chip, the tip is positioned at the locations of structures of the neighbouring terminal of the micro-fluidic chip
On, fixation is attached in a hinge at least in and is equiped with miniature ultrasonic transducer units, and, higher-order of oscillation telecommunication
Number transmission cable, one end and the miniature ultrasonic transducer units of the higher-order of oscillation electric signal transmission cable link together;The conjunction
Page fixture provides a function of facilitating the device to disassemble;Its major function of the miniature ultrasonic transducer units is micro-fluidic
During the test of chip actual sample introduction, the ultrasonic wave launched using it reduces sample solution and its inner passage of the micro-fluidic chip
Inwall between interfacial tension, can be compatible, also, utilize the sample introduction end and the terminal and the miniature ultrasonic
Difference in the distance between wave transducer installation position difference and its ultrasonic intensity experienced, described in induced synthesis
Difference between its interfacial tension of sample introduction end and the terminal its interfacial tension, the interface between the micro-fluidic chip both ends
Power difference can form pressure gap between the both ends of the micro-fluidic chip, and the pressure gap can drive sample solution to described
End flow;The ultrasonic wave that its function of the miniature ultrasonic transducer units also includes being launched with it checks life contained in sample
Its absorption on the micro-fluidic chip its inner passage inner surface of thing macromolecular, and then check the dimethyl silicone polymer material
Swallow up effect of its body phase of substrate to the large biological molecule;The substrate of the dimethyl silicone polymer material that is soft and having elasticity
Its function includes, with its property to the strong absorption of ultrasonic wave, absorbing ultrasonic wave strongly, and thereby in the micro-fluidic core
The piece terminal is to the rapid decrement that ultrasonic intensity is realized within the limited short distance between the sample introduction end;And Micropump, should
Micropump is connected with the sample introduction end;The function of the Micropump is the inwall in the sample solution Yu its inner passage of micro-fluidic chip
Between interfacial tension reduced, under the increased precondition of alternate compatibility by the ul-trasonic irradiation, with the machinery of the Micropump
Property interfacial tension difference its caused driving force for coming between the both ends of ultrasonic wave induction of pumping strength it is mutual
Support, adjust mutually, be mutually coupled, one driving test liquid is pooled in a manner of Collaboration and flows to the terminal direction stream
Dynamic strength, some high hydroscopic resin particles are filled with the terminal liquid pool, its opening end of the terminal liquid pool is by breathable microporous film
Covered.
2. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is that it is capillary channel that the pipeline, which includes the lateral,.
3. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is that the thermal decomposition conducting polymer is the electric conductivity material formed by polyimides or polyacrylonitrile after anoxybiotic is heat-treated
Material.
4. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is, the width or diameter of the working electrode between 0.1 micron to 2000 microns, and, the working electrode
Length is between 1 micron to 15000 microns.
5. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is that the thickness of the gold size sensitive membrane is between 10 nanometers and 200 nanometers.
6. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is, the cover plate its material in structure is dimethyl silicone polymer material.
7. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is that the Micropump is miniature piezoelectric pump, miniature peristaltic pump or miniature air driven pump.
8. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is that described its thickness of cover plate and substrate in structure is between 1.0 millimeters and 5.0 millimeters.
9. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is that the structure of the micro fluidic device also includes higher-order of oscillation electric signal generator, the higher-order of oscillation electric signal transmission electricity
Its other end of cable is connected with the higher-order of oscillation electric signal generator.
10. the co-detections of tumor markers in benign chip apparatus according to claim 1 using PDMS as the dual drive of substrate, it is special
Sign is that for its specified ultrasonic wave transmission power of the miniature ultrasonic transducer units between 5 milliwatts and 5000 milliwatts, this is miniature super
The frequency of its ultrasonic wave operationally launched of acoustic wave transducer is between 100KHz and 12MHz.
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CN201610676642.2A CN107694623A (en) | 2016-08-09 | 2016-08-09 | Co-detections of tumor markers in benign chip apparatus using PDMS as the dual drive of substrate |
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Publication Number | Publication Date |
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2016
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